Hello,

I am running single species, single season occupancy models in PRESENCE. I have certain categorical covariates for which I need to see the effect on detection probability. However, I am having issue in design matrix for entering data for categorical covariates in detection probability matrix. Suppose I have 4 habitat types and I know to know the effect of habitat on detection probability, how should I enter data for the following in PRESENCE:

Rep1 Rep2 Rep3 Rep4

A1 hab1 hab3 hab1 hab2

A2 hab3 hab4 hab1 hab3

A3 hab2 hab1 hab4 hab1

A4 hab1 hab1 hab4 hab3

If someone can guide me in how should I enter the data in design matrix.

Regards,

Prashant